

.overflow {
    overflow: hidden
}


.clearfix:after {
    content: '\20';
    display: block;
    height: 0;
    clear: both
}

.clearfix {
    zoom:1}

.clear {
    clear: both;
    height: 0;
    line-height: 0;
    font-size: 0;
    visibility: hidden;
    overflow: hidden
}

#slider{
    margin: 10px auto;
    width: 100%;
    height:100%;
    border: none;
    background-color: yellowgreen;
    overflow: hidden;
    position: relative;
}
.pics{
    width: 100%;
}
img{
    width: 100%;
    height: 100%;
}
.btns{
    width: 200px;
    text-align: center;
    position: absolute;
   bottom: 10px;
   right: 20px;
}
.btns a{
    background-color: darkgray;
    display:inline-block;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    margin: 0 3px;
}
.btns a.on{
    background-color: white;
}